The answer is x=3, so that is false.
Answer:
12
Step-by-step explanation:
3x + x + 42 = 90 ........ 4x = 48 ......x = 12
Answer:
Step-by-step explanation:
Previous Iron content per serving=1.2 mg
Current Iron content per serving=1.8 mg
Increase in Iron content per serving=1.8-1.2=0.6 mg
Percentage of Iron Increase
Answer:
Sorry i do not know
Step-by-step explanation:
Correct option is B)
Cross-multiplication is helpful in Solving proportions.
<h3>What is Solving Proportions?</h3>
Solving proportions is simply a matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying and solving the resulting equation.
<h3>What are the 2 methods for solving proportions?</h3>
Method I: Draw a double-sided number line, label the parts, set up a proportion and solve.
Method II: Using any method, calculate unit rate and then calculate how many pounds you can get for $30. Method III: Graph a point to represent the original ratio.
<h3>
What is the rule for solving proportions?</h3>
The product of the means is equal to the product of the extremes.
Learn more about solving proportions here: brainly.com/question/14752332
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I understand the the question you are looking for is :
Cross-multiplication is helpful in:
a. quadratic equations
b. solving proportions
c. linear equations
d. word problems
please select the best answer from the choices provided a b c d